Adjustable oil burner



Apr 22H9, 2s. 1,667,36

' A. c. WARD ADJUSTABLE OIL BURNER Filed April 21. 1923 ff l 409@ z8 ma@ 47 J as Taz 15 4 f7 ,y/////////// ==\-.-=W 5 2: Y v f/r z l@nmnfi;mi

Ww f M. .1\ /l 24 ad wl Z5 1i 55 35 lz' Patented Apr. 24, 1928.

UNI-TED STATES PATENT orricef ARTHUR o, WARD? or oAKMoNT, rnNNsYLvAnIA AssIeNoR To THE AUTocAncOM- PANY, or Animomi, PENNSYLVANIA, A CORPORATION or yPENNsYLvAmA.

ADJUSTABLE oIL BURNER.`

Application filed Apru 21,

My invention relates to oil burners intend-V ed for lfeeding oil fory heating purposes, particularly for furnace use. p

The main purpose ofmy invention'is to secure coincident air and oil admission and control with adj ustment of the relative openings and absolute cut-off for the oil.

A further purpose is to secure accessibility for cleaning purposes with or Without coinl" cident opening of the air and oil inlet passages. A

A further purpose is to obtain cut-off for 'the oil With quickopening to a. predetermined point and slow opening beyond this ^-10-f1- a t1 fpoint a ong u it 1 coinci ent an con ro pre erably adjustable as to its closing position.

Further purposes will appear in the speci lication and inthe claims. i

I have preferred to illustrate my inve'n tion by but one form, selecting a form lwhich has proved to be highly practicable, etlicient flow of properly proportioned air andoil has been complicated by the clogging of the oil Within the burner passages and by the consequent inclination of the operator to independently adjust the air and oil with a view to improving the burning qualities.v When clogging takes place instead of cleaning the burner the operator disturbs the adjustment. K

This practiceof altering the set proporf tion of the openings is made more generalr by the factthatno satisfactorycommon control of airand oil has been available which is adapted to be set tol a predetermined pro- O' portion and which is readily enough cleaned not to invite alteration of the setting in lieu of cleaning of the burner. My invention has been directed, therefore, toward remedying these defects and imjgroving-the individual 192e. serial N6. 633,596.

parts and relative ustments of the burner.

The casing of the burner shown comprises a body 5 and av bonnet 6 secured through flanges 7 and v8y by bolts 9, 4A pin l0 insures accurate angularplacing ofthe parts .so as to maintain the angular relation desired-ordinarily parallelism-of the air and oi'l inlets 11 and 12. To improve the joint and at the same time to insure quick i and i accurate .alignment of the body and bonnet, the body is recessed to receive the circular flange 13 of the bonnet. y

The stem 111 extends through the axis of the body and bonnet and is longitudinally bored at 15 to uniform diameter so as to supply a passage for the oil from the point of oil inlet and to make this oil passage accessible for a cleaningqvire entering from the outer end, which endis normally closed by plug 16;

At the inner end (the left end in Figure 1) this spindle carries an` integral air valve 17 and ra removable nip'pl'e18. The nipple opening 19 forms a nozzle Whose diameter will be selected to suit the duty for which theparticular burner is intended, depending upon the viscosity of the oil intended to be used as Well as upon other factors. The

nipple is threaded into the stein-omas here,4 i

into the valve upon the stem-at 2() and the `rear of the interior of the nipple is belled at `21 to guide the cleaning Wire easily into the n nippleb The air inlet 11 leads into the air cham;

ber 22 and is shown as threaded at 23 for connection of the air pipe. The air chamber surrounds the rear end' of the air valve. The face 24; of theair valve is tapered to cooperate with a taperedyalve seat 25 Withi in a sleeve 26 threaded at 2 into the front end ofy the body. The sleeve is adjustable axially along the threads to vary the posi tion at which theair valve closes It may be threaded into place tightly enough to stay inadjusted position or may be lockedin adjusted position by any other suitable means. Openings 28 for a Spanner Wrench :are shown.`

The oil inlet 12 leads into theoil chamber 29, surrounding a cut-olfoil l'closure 3() Whose face 31 seatsin closed position against thevbody. In the illustration this seat is shown at the ``bo`ttom--82 ofl aj recess 33 of ,somewhat larger diameter than that 0f the cut-ott' valve. with the purpose and. intent that. the oil shall be permitted to tlow :treely between the tace :it the ent-od valve and its seat as soon as the cut-ott valve is litted and in proportion to the extent ot' lifting ofthe valve. The total flow however, is not provportionate to the. extent ot this valve openthread 23st cut upon the spindle and extending beyond the cut-ott' valve in both directions so as to vprovide for tl adjustment oi this valve axially ot' the spindle. The end ot the valve is titted at 35 to receive a wrench and the valve is locked in adjusted position by a lock nut 86. Obviously the valve need not have its seat recessed.

The quantity ot oil ted when the cut-ott valve is opened is controlled by varying the length whieh'is uncovered o'l a slot or slots 37 in a cylindrical portion 38 ot' the stem, which cylindrical portion bears against the inner wall of a bore 39 within the body. The wall ot the bore prevents access oi? oil to the slot or slots except for an initial access which l prefer to provide7 immediately upon opening t the cut-ott valve, through a counterbore 4() and tor such additional ex-V posure ot the slot or slots as is caused by axial moven'ient oit the stem.

The cylindrical portion ot the stein is thus initially open7 troni the exterior to the bore throughout the length otI the slot opening or openii'igs but the cut-ott valve may be. adjusted to lie over the openingl or openings to reduce their length and, in the closed pos`tion of. the parts7 all or a large part of the length ot the opening or openings is closed by the wall o't' the bore in the body oi the valve.

The bore 39 is larger in diameter than the vthread Sel. to permit assemblageot the stem within the body by insertion from lett to right. prior to placing ot the sleeve 2G carrying the au' valve seat.

ln order to keep the burner cool when in position before a. hot 'furnace but not in use. I prefer to allow a little air leakage when the air valve is c1osed.y i. e., in its moet nearly closed position. This slightly open air valve position is intended to be shown in Figure l. A valve is provided in the air supply for complete closure..

Movement of the spindle to open both the air valve and the cut-ott valve concurrently is provided by a thread Lt1 upon the spindle engaging Within a corresponding thread in the bonnet and by a hand wheel 12 secured removably to the spindley as by set screws 43. The thread tl must permit passage ot the cut-ott' valve and nu't either by registering with their threads or by reason of smaller diameter. The cap elfi tightens packinn` t5 about the stem.

oiil valve position or by the position oitl the air valve seat or both to that the air valve and cut-ott' valve may seat concurrently, with air leakage, is intended.

rthe bonnet is ne.\ t applied. It may be turned to position it' the pin l() is to be subsequently applied or the spindle may be turned to permit the bonnet to come down home ift the `pin be already in the bonnet.

rlhe bonnet is then secured to the body by the bolts and the gland and hand wheel are applied.

Constant: air leakage when the air valve is closed `torms one oitI several possible reasons tor quick initial oil valve opening such as is provided by eounterbore 40.

The size ot the slot,V number ot' slots, the pressure et the air and oil and the taper oit the air valve contact with its seat determine the proportion o'tl air and oil for any intended standard opening and may be designed or may be determined experimentally to give the best results for any particular installation.

Aitor the air and oil connections have been ymade the handle is turned to open the air IDO Both valves are thus opened together and ing. As the longitudinal movement of the spintueis increased, the increase of slot` oliening` is proportionate to the increase of longitudinal movement of the spindle.

Though the burners are adjusted for a detinite proportion ot' air and oil. at a given g L isa-,eea

preferably maximum valve; opening,` by v'the construction shoi'vn theyinay be'designed tok secure any approximation which may be desired to the same mixture, representing any i any time and the ultimate length of slot or slots available for exposure With full open+ ing may be vaiied after initial setting and after use by advancing or retraeting the cutoff valve positionupon the spindle and ,correspondingly retracting -or advancing the sleeve rupon ivliicli vthe un' valve seatis` mounted; Since the' euteotf valve is mounted so as to extend over tlieiear endof the openy portion this shifting ofthe cut-olf valve will leave a shorter or longer length Hof opening lying Within Y the bore (and counte'ibore if there beia counterbore) to; be exposed by,

valve-opening movement of the spindle.

Then any cloggiii'g" 'takes place the valves are closed and the plug is removed. A Wire can then be run through the length of the stem and nipple and, if needed, an air pipe or Water pipe for air or hot Water can be attached to thoroughly cleanse the passage.

In view of my disclosure herein it Will be` obvious that other forms Will occur to those skilled in the art securing all or a part of the benefit of my invention and it is my purpose to protect herein all such as fall Within the reasonable spirit and scope of my invention.

Having thus described my invention, What I claim as new and desire to secure by Let` ters Patent is 1. In an oil burner, a hollow body, an adjustable valve seat Within the body` having lateral oil openings, a hollow spindle extending longitudinally of the body, a tapered valve carried by the spindle and engaging the seat, an air inlet to the body supplying air about t-lie valve, a portion of the body being' bored to fit the surface of the spindle and in closed positions of the valve to shutoff lateral access to oil openings leading into the interior of the spindle, a cut-off valve adjustable in position to expose varying lengths of these openings, an oil inlet permitting fioiv of oil about the cut-off valve and means for moving the spindle axially to open the air valve and cut-oftl valve and expose the openings concurrently.

2i. In an oil burner, a hollow spindle at an intermediate point threaded and having a portion between the thread and one end of uniform diameter provided with an opening for oil inlet to the interior, a casing for the spindle bored to fit the intermediate portion e of uniform diameter and in one position of the spindle vto overlie the opening and en gage the surface about it and eounterbored about the opening at one end Where `it overlies a portion of the opening, a valve seat about thecouiiterbore, a cut-off valve mounted upon the spindle toengage lsaid s`eat",wan-o1l:y

inletito "admit oil about the eut-lofi valve, anA

air valve 'mounted upon'the; spindle,l an' air f valve seat therefor mounted upon tliecasing',

inlet connection for air about Vtheair valve and ,means for moving the spindle axially.

8; In an oil burner, a hollow spindlev threadednear one end and havin an inter- D mediate portion of uniform diameter open foroil'inlet to the interior, a casing for the spindle bored to lit the intermediate portion n ofuniform diameter lto overlie the open portion and lit tliesurface about it-,a valve'seatfv adpicentv the "boredv portion, a cut-.oil valve mounted adjustablyupon the thread to en-y gage said seat,an inlet,conneetionforl ad-` mitting oil about'tli'e cut-off valve, aiivair valve mounted upon the spindle,r an air valve seat ftherefor, inlet connection forrair about the air valve and means for movingfthe spindleaxially." f i 4.1111, an `oil burner, va holleny vspindle threaded near one end and having an intermediate portion of uniform diameter ope-n for oil inlet to the interior, a casing for the spindle bored to fit the intermediate portion of uniform diameter to overlie the open portion and to engage the surface about it, a valve seat adjacent the bored portion, ak cutolf valve mounted upon the spindle to en gage said seat, an inlet oil pressure connectionV about the cutolf valve, an air valve mounted upon the spindle, an air valve seat therefor upon the casing, the cutoff valve being adjustable relatively to the spindle, an inlet connection for air about the air valve and means engaging the thread by which the spindle may be moved axially.

5. In an oil burner a hollow spindle threaded nea-r one end and slitted at an intermediate point to permit oil access from the side,a valve at one end of the spindle, a valve about the slitting adjustable to cover variant extents of the slitting and a easing about the spindle having seats for both valves.

6. In an oil burner, a easing having an open discharge end and an intermediate boie of uniform diameter, and a counterbore, an adjustable valve seat in the discharge end, a hollow spindlehaving an intermediate por tion of uniform diameter to iit the bore of the casing open to the interior of the spindle, an air valve adapted to engage the seat in the casing, a cut-off valve seat upon the easing adjacent the uniform bore of the casing and at the end lthereof farthest from the air valve, a eut-off valve mounted upon the spindle, adjustable upon the spindle to cover vvariant extents of the opening to the intesie lll() iior of the spindle, and means for giving longitudal movement to the spindle to operate both valves concurrently.

7. In an oil burner, a casing open at one end and having a bore and counterbore, a hollow stemin the body fitting the bore and open longitudinally to the center where it lits the bore and at the counterbore to eX- pose free from the bore an initial opening and diilering additional lengths of opening with dillerent positions of the stein, air and oil pressure connections about the stem, valve seats supported by the body, an air valve at one end of the stem and a out-oil" valve upon the steinbetween the apertured portion thereof and the oil inlet.

8. In an oil burner, a casing having a cylindrical bore, a hollow spindle having a portion engaging the bore and slotted in said portion through to the hollow of the spindle, means' for moving the spindle air and oil pressure connections for the casing at opposite ends of said bore, air inlet and oil out-off valves mounted upon the spindle and spaced by said bore, the oil valve being` closely adjacent to the slot, and seats for said valves carried by the casing, each Valve and seatbeing relatively adjustable independently of movement of the spindle.

ing having an air valve seat at one end and an axially facing oil valve seat intermediate its length, in combination with a laterally apertured spindle fitting the casing to cover the apertures to varying degrees, an air `valve upon the spindle and an oil valve adjustably mounted upon the spindle to oooperate with the seat and cover the apertures to differing extents.

ARTHUR C. VVARD. 

